IIOT Cyberattacks in Industrial Field Control Systems: PID Attack and Hardware Trojan Effects

This work analyzes hardware manumissions and attacks in the controller field of industrial Operational Technology (OT) networks. Specifically, the paper models and simulates the analog Trojan effects changing the signals at the output of electronic devices or sensors used for Industrial Internet of Things (IIOT) data transmission. The study enhances the analog Trojan capacitor and resistance effects of a humidity sensor, and the Proportional-Integral-Derivative (PID) controller behavior due to possible attacks. Parametric analyses are performed to study how the change of the electrical parameters influences the deteriorated output signal about a correct reading. The proposed methodology is suitable to design testbed plans simulating electronic cyberattack responses useful to distinguish through the signal analysis possible manumitted devices for sensing and actuation operations.